低剂量 ct 投影数据多尺度去噪算法的研究

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1、分类号密级国际十进分类号（UDC）第四军医大学学位论文低剂量CT投影数据多尺度去噪算法的研究（题名和副题名）张珠（作者姓名）卢虹冰教授指导教师姓名第四军医大学生物医学工程系指导教师单位硕士计算机应用技术申请学位级别专业名称2009.042009.05论文提交日期答辩日期2006年9月至2009年5月论文起止时间第四军医大学学位授予单位独独创性声明秉承学校严谨的学风与优良的科学道德，本人声明所呈交的论文是我个人在导师指导下进行的研究工作及取得的研究成果。尽我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已

2、经发表或撰写过的研究成果，不包含本人或他人已申请学位或其他用途使用过的成果。与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示了致谢。申请学位论文与资料若有不实之处，本人承担一切相关责任。论文作者签名：日期：保护护知识产权声声明本人完全了解第四军医大学有关保护知识产权的规定，即：研究生在校攻读学位期间论文工作的知识产权单位属第四军医大学。本人保证毕业离校后，发表论文或使用论文工作成果时署名单位仍然为第四军医大学。学校可以公布论文的全部或部分内容（含电子版，保密内容除外），可以采用影印，缩印或其他

3、复制手段保存论文。学校有权允许论文被查阅和借阅，并在校园网上提供论文内容的浏览和下载服务。同意学校将论文加入《中国优秀博硕士学位论文全文数据库》和编入《中国知识资源总库》，同意按《中国优秀博硕士学位论文全文数据库出版章程》规定享受相关权益。论文作者签名：导师签名：日期：低剂量CT投影数据多尺度去噪算法的研究研究生：张珠学科专业：计算机应用技术所在单位：第四军医大学生物医学工程系导师：卢虹冰教授辅导教师：焦纯讲师王舒宜高级实验师资助基金项目：国家自然科学基金（30470490和60772020）关键词：低剂量CT，多尺

4、度，二进小波变换，去噪中国人民解放军第四军医大学2009年5月第四军医大学硕士学位论文目录缩略语表···················································································································1中文摘要····························································································

5、·······················2英文摘要···················································································································4前言···················································································································

6、6文献回顾···················································································································8正文·················································································································111.CT成像原理及低剂量CT图像·······

7、·······················································111.1CT投影数据·······················································································111.2滤波反投影重建算法（FBP）··························································131.3影响CT辐射剂量的主要因素·············

8、·············································151.4低剂量CT的实现方式及优点··························································171.5低剂量CT投影数据的特点···································